Reference : Relationships between the P status of surface and deep horizons of agricultural soils...
Scientific journals : Article
Life sciences : Agriculture & agronomy
Life sciences : Environmental sciences & ecology
http://hdl.handle.net/2268/148035
Relationships between the P status of surface and deep horizons of agricultural soils under various cropping systems and for different soil types: a case study in Belgium
English
Renneson, Malorie mailto [Université de Liège - ULiège > Sciences et technologie de l'environnement > Systèmes Sol-Eau >]
Dufey, J. [> >]
Legrain, Xavier mailto [Université de Liège - ULiège > Sciences et technologie de l'environnement > Systèmes Sol-Eau >]
Genot, V. [> >]
Bock, Laurent mailto [Université de Liège - ULiège > Sciences et technologie de l'environnement > Systèmes Sol-Eau >]
Colinet, Gilles mailto [Université de Liège - ULiège > Sciences et technologie de l'environnement > Systèmes Sol-Eau >]
Mar-2013
Soil Use and Management
Blackwell Publishing Ltd
29
S1
Phosphorus in Soil and Its Transfer to Water
103--113
Yes (verified by ORBi)
International
0266-0032
1475-2743
[en] Phosphorus ; soil ; parent material ; land use ; P forms ; Belgium
[en] Application of phosphorus (P) fertilizers to agricultural soils should be based on sound knowledge about soil P reserves, availability and lability to optimize conditions for plant uptake while limiting P transport to surface waters. This study investigated relationships between parent material (PM), land use and P fractions in agricultural soils at a regional scale. Surface and deep (100–120 cm) soil samples were collected from 120 agricultural sites (240 total samples) and analysed for three P forms (inorganic, organic and available) as well as for additional key properties. Land uses within the study area were continuous cropland, permanent pasture and temporary grassland. The area covered the 12 most common parent types in Wallonia. Mean total P contents were 904 and 401 mg/kg in surface and deep samples, respectively, with a 33% coefficient of variation for both horizons. The organic P fraction represented, on average, 30% of total P, while available P corresponded to 9% of total P. The influence of PM was apparent in both the surface and deep soil samples, while land use influenced only surface properties. The pattern in total P content relative to land use was pasture ≥ cropland ≥ temporary grassland. Correlation analyses highlighted significant relationships between edaphic parameters viz Alox, Feox, CEC, TOC, pH and P content, the main soil parameter being Alox which determines P sorption capacity. An enrichment factor was used to distinguish between geogenic sources and human activities in terms of topsoil P content.
Fonds pour la formation à la Recherche dans l'Industrie et dans l'Agriculture (Communauté française de Belgique) - FRIA
http://hdl.handle.net/2268/148035
10.1111/j.1475-2743.2012.00435.x
http://dx.doi.org/10.1111/j.1475-2743.2012.00435.x

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